If you notice a small sore or a change in the appearance of the tissues inside your mouth, don’t panic. It’s likely a common, minor ailment that appears on a lot of skin surfaces (like the wrists or legs) besides the cheeks, gums, or tongue.

These small sores or lesions are called lichen planus, named so because their coloration and patterns (white, lacy lines) look a lot like lichen that grow on trees or rocks. They’re only similar in appearance to the algae or fungi growing in the forest — these are lesions thought to be a form of auto-immune disease. Although they can affect anyone, they’re more common in women than men and with middle-aged or older people.

Most people aren’t even aware they have the condition, although some can produce itching or mild discomfort. They’re often discovered during dental checkups, and although they’re usually benign, we’ll often consider a biopsy of them to make sure the lesion isn’t a symptom of something more serious.

There currently isn’t a cure for the condition, but it can be managed to reduce symptoms; for most people, the lesions will go away on their own. You may need to avoid spicy or acidic foods like citrus, tomatoes, hot peppers or caffeinated drinks that tend to worsen the symptoms. If chronic stress is a problem, finding ways to reduce it can also help alleviate symptoms as well as quitting tobacco and reducing your alcohol intake.

Our biggest concern is to first assure the lesion isn’t cancerous. Even after confirming it’s not, we still want to keep a close eye on the lesion, so regular monitoring is a good precaution. Just keep up with the basics — good oral hygiene and regular checkups — to ensure you have the most optimum oral health possible.